The Agriculture Ministry confirmed late Thursday that the H7N9 virus had
been detected in live pigeons on sale at a produce market in Shanghai.
The killing of birds at the Huhuai market in Shanghai started Thursday
night after the city's agricultural committee ordered it in a notice
also posted on its website.

it's not clear if the pigeons were alive or dead, wild pigeons caught for sale or those raised for food or to be used as pets/homing pigeons.